Rustins Wood Hardener for Rotted Wood 250ml

I used Rustins Wood Hardener on several rotten timber areas and it genuinely transformed soft crumbling wood into a solid stable surface. It penetrates well, dries fast and creates a tough plastic like finish that’s perfect for filling or repainting. It’s easy to apply but wear gloves, once it’s on your skin it’s a nightmare to remove. The results are excellent and it’s saved me from replacing window frames and sills. A reliable product I’d happily buy again.

I used Rustins Wood Hardener for Rotted Wood (500 ml) on some areas of exterior timber that had started to soften due to rot. In terms of function, the product does what it is designed to do. It soaks into deteriorating wood fibres and helps stabilise them, leaving the timber noticeably firmer once it has cured. The liquid itself is very thin and penetrates well into soft wood, which makes it effective for consolidating damaged areas before filling or repairing. Application is straightforward with a brush, and it spreads easily over the affected timber. However, the biggest issue with this product is the very strong smell and fumes. The odour is extremely powerful and lingers for quite a long time after application. Even with good ventilation, the fumes are quite unpleasant and can quickly make an indoor environment uncomfortable to work in. Because of this, I would strongly recommend using it outdoors or in very well-ventilated areas only. If you do need to use it inside, proper ventilation and possibly a respirator would be sensible precautions. In summary, it is an effective wood hardener that does its job, but the fumes are significant and something buyers should be aware of before using it indoors.

Does what I needed it to do. Hardened up the wood very well so I could fill, sand and paint it. It does have a very powerful smell however. Best to use it when everyone will be out of the house for a while.

Works a treat. Hardens the softest rotten wood. Saves doors and windows.

This really works ,I couldn't do as much prep on my decayed part of the fence as stated as the wood would have crumbled so I was unsure if this would work.It returned my piece of fence to a solid piece of wood again absolutely perfect.It smells harsh but well with it

Where a filtered air mask when using this stuff. It has the consistency of thin treacle and provides a waterproof barrier on wood (rotten or sound) after it's dried. It worked well, but I ended up using both 500ml tins on the same very small area and still need more, so value wise, next time I will be looking for a much bigger quantity, probably 5 litres+ It appears to have hardened both rotten timber and the sound timber next to it, the first coat does take a fair while to soak in, even in the hot weather we've had lately, the second coat dried to a shine. Wear gloves and keep away from it while it's drying, as it dries it becomes very sticky, when fully dried it is not sticky at all. If you get it on your skin, wash it off immediately with washing up liquid & water or it will stain your skin and the compounds contained it can enter your body through your skin.

Gloves & Ventilation is a must, very strong smelling liquid, much like a varnish to use. Drilled a load of holes in a partially rotten back door sill, used a disposable syringe, this product seems to do a decent job at re-hardening rotten wood fibres & binds them back together. Also used this stuff to prime around all the joint of my concrete sectional garage & where it rests on the concrete floor, previous attempts to seal the garage to floor interface have only last a couple of yrs before the sealant lost its grip on the concrete floor, worked well on the inside, I assume the exterior will be just as successful. Found another use for this awesome liquid, this is a temp solution to a leaking garage roof. Old corrugated roofing panels have become porous, cracked in place & started to allow water ingress, jet washed roof exterior, allowed it to dry, painted this liquid liberally on the roof, soaks in well, seems to be a winner, water tested next day, water just beads up & runs off, no more soaking thru to the inside. Also stopped the annual covering of moss that has been a problem as garage is in the shade of trees, so killed 2 birds etc. Only complaint is it's pricey & no-one sells it in larger cans than 250mls.

Is a rather oily product takes a while to sink in; I usually use the more liquid variety, goes into the wood/rot quicker and I would imagine deeper down into the wood.

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